1 /* 2 * Copyright (C) 2016 BlueKitchen GmbH 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the copyright holders nor the names of 14 * contributors may be used to endorse or promote products derived 15 * from this software without specific prior written permission. 16 * 4. Any redistribution, use, or modification is done solely for 17 * personal benefit and not for any commercial purpose or for 18 * monetary gain. 19 * 20 * THIS SOFTWARE IS PROVIDED BY BLUEKITCHEN GMBH AND CONTRIBUTORS 21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL MATTHIAS 24 * RINGWALD OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 26 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 27 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF 30 * THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * Please inquire about commercial licensing options at 34 * [email protected] 35 * 36 */ 37 38 39 #include <stdint.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 44 #include "btstack.h" 45 46 #define AVRCP_BROWSING_ENABLED 0 47 48 #ifdef HAVE_BTSTACK_STDIN 49 #include "btstack_stdin.h" 50 #endif 51 52 #ifdef HAVE_AUDIO_DMA 53 #include "btstack_ring_buffer.h" 54 #include "hal_audio_dma.h" 55 #endif 56 57 #ifdef HAVE_PORTAUDIO 58 #include "btstack_ring_buffer.h" 59 #include <portaudio.h> 60 #endif 61 62 #ifdef HAVE_POSIX_FILE_IO 63 #include "wav_util.h" 64 #define STORE_SBC_TO_SBC_FILE 65 #define STORE_SBC_TO_WAV_FILE 66 #endif 67 68 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) || defined(HAVE_AUDIO_DMA) 69 #define DECODE_SBC 70 #endif 71 72 #define NUM_CHANNELS 2 73 #define BYTES_PER_FRAME (2*NUM_CHANNELS) 74 #define MAX_SBC_FRAME_SIZE 120 75 76 // SBC Decoder for WAV file or PortAudio 77 #ifdef DECODE_SBC 78 static btstack_sbc_decoder_state_t state; 79 static btstack_sbc_mode_t mode = SBC_MODE_STANDARD; 80 #endif 81 82 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 83 #define PREBUFFER_MS 200 84 static int audio_stream_started = 0; 85 static int audio_stream_paused = 0; 86 static btstack_ring_buffer_t ring_buffer; 87 #endif 88 89 #ifdef HAVE_AUDIO_DMA 90 // below 30: add samples, 30-40: fine, above 40: drop samples 91 #define OPTIMAL_FRAMES_MIN 30 92 #define OPTIMAL_FRAMES_MAX 40 93 #define ADDITIONAL_FRAMES 10 94 #define DMA_AUDIO_FRAMES 128 95 #define DMA_MAX_FILL_FRAMES 1 96 #define NUM_AUDIO_BUFFERS 2 97 98 static uint16_t audio_samples[(DMA_AUDIO_FRAMES + DMA_MAX_FILL_FRAMES)*2*NUM_AUDIO_BUFFERS]; 99 static uint16_t audio_samples_len[NUM_AUDIO_BUFFERS]; 100 static uint8_t ring_buffer_storage[(OPTIMAL_FRAMES_MAX + ADDITIONAL_FRAMES) * MAX_SBC_FRAME_SIZE]; 101 static const uint16_t silent_buffer[DMA_AUDIO_FRAMES*2]; 102 static volatile int playback_buffer; 103 static int write_buffer; 104 static uint8_t sbc_frame_size; 105 static int sbc_samples_fix; 106 #endif 107 108 // PortAdudio - live playback 109 #ifdef HAVE_PORTAUDIO 110 #define PA_SAMPLE_TYPE paInt16 111 #define SAMPLE_RATE 48000 112 #define FRAMES_PER_BUFFER 128 113 #define PREBUFFER_BYTES (PREBUFFER_MS*SAMPLE_RATE/1000*BYTES_PER_FRAME) 114 static PaStream * stream; 115 static uint8_t ring_buffer_storage[2*PREBUFFER_BYTES]; 116 static int total_num_samples = 0; 117 #endif 118 119 // WAV File 120 #ifdef STORE_SBC_TO_WAV_FILE 121 static int frame_count = 0; 122 static char * wav_filename = "avdtp_sink.wav"; 123 #endif 124 125 #ifdef STORE_SBC_TO_SBC_FILE 126 static FILE * sbc_file; 127 static char * sbc_filename = "avdtp_sink.sbc"; 128 #endif 129 130 typedef struct { 131 // bitmaps 132 uint8_t sampling_frequency_bitmap; 133 uint8_t channel_mode_bitmap; 134 uint8_t block_length_bitmap; 135 uint8_t subbands_bitmap; 136 uint8_t allocation_method_bitmap; 137 uint8_t min_bitpool_value; 138 uint8_t max_bitpool_value; 139 } adtvp_media_codec_information_sbc_t; 140 141 typedef struct { 142 int reconfigure; 143 int num_channels; 144 int sampling_frequency; 145 int channel_mode; 146 int block_length; 147 int subbands; 148 int allocation_method; 149 int min_bitpool_value; 150 int max_bitpool_value; 151 int frames_per_buffer; 152 } avdtp_media_codec_configuration_sbc_t; 153 154 #ifdef HAVE_BTSTACK_STDIN 155 // mac 2011: static bd_addr_t remote = {0x04, 0x0C, 0xCE, 0xE4, 0x85, 0xD3}; 156 // pts: static bd_addr_t remote = {0x00, 0x1B, 0xDC, 0x08, 0x0A, 0xA5}; 157 // mac 2013: 158 // mac 2013: static const char * device_addr_string = "84:38:35:65:d1:15"; 159 // iPhone 5S: 160 static const char * device_addr_string = "54:E4:3A:26:A2:39"; 161 #endif 162 163 // bt dongle: -u 02-02 static bd_addr_t remote = {0x00, 0x02, 0x72, 0xDC, 0x31, 0xC1}; 164 165 static uint8_t sdp_avdtp_sink_service_buffer[150]; 166 static avdtp_media_codec_configuration_sbc_t sbc_configuration; 167 static uint16_t a2dp_cid = 0; 168 static uint8_t local_seid = 0; 169 static uint8_t value[100]; 170 171 typedef enum { 172 AVDTP_APPLICATION_IDLE, 173 AVDTP_APPLICATION_CONNECTED, 174 AVDTP_APPLICATION_STREAMING 175 } avdtp_application_state_t; 176 177 avdtp_application_state_t app_state = AVDTP_APPLICATION_IDLE; 178 179 static btstack_packet_callback_registration_t hci_event_callback_registration; 180 181 static int media_initialized = 0; 182 183 #ifdef HAVE_BTSTACK_STDIN 184 static bd_addr_t device_addr; 185 #endif 186 187 static uint16_t avrcp_cid = 0; 188 static uint8_t sdp_avrcp_controller_service_buffer[200]; 189 190 #ifdef HAVE_PORTAUDIO 191 static int patestCallback( const void *inputBuffer, void *outputBuffer, 192 unsigned long framesPerBuffer, 193 const PaStreamCallbackTimeInfo* timeInfo, 194 PaStreamCallbackFlags statusFlags, 195 void *userData ) { 196 197 /** patestCallback is called from different thread, don't use hci_dump / log_info here without additional checks */ 198 199 (void) timeInfo; /* Prevent unused variable warnings. */ 200 (void) statusFlags; 201 (void) inputBuffer; 202 (void) userData; 203 204 int bytes_to_copy = framesPerBuffer * BYTES_PER_FRAME; 205 206 // fill with silence while paused 207 if (audio_stream_paused){ 208 209 if (btstack_ring_buffer_bytes_available(&ring_buffer) < PREBUFFER_BYTES){ 210 // printf("PA: silence\n"); 211 memset(outputBuffer, 0, bytes_to_copy); 212 return 0; 213 } else { 214 // resume playback 215 audio_stream_paused = 0; 216 } 217 } 218 219 // get data from ringbuffer 220 uint32_t bytes_read = 0; 221 btstack_ring_buffer_read(&ring_buffer, outputBuffer, bytes_to_copy, &bytes_read); 222 bytes_to_copy -= bytes_read; 223 224 // fill with 0 if not enough 225 if (bytes_to_copy){ 226 memset(outputBuffer + bytes_read, 0, bytes_to_copy); 227 audio_stream_paused = 1; 228 } 229 return 0; 230 } 231 #endif 232 233 #ifdef HAVE_AUDIO_DMA 234 static int next_buffer(int current){ 235 if (current == NUM_AUDIO_BUFFERS-1) return 0; 236 return current + 1; 237 } 238 static uint8_t * start_of_buffer(int num){ 239 return (uint8_t *) &audio_samples[num * DMA_AUDIO_FRAMES * 2]; 240 } 241 void hal_audio_dma_done(void){ 242 if (audio_stream_paused){ 243 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 244 return; 245 } 246 // next buffer 247 int next_playback_buffer = next_buffer(playback_buffer); 248 uint8_t * playback_data; 249 if (next_playback_buffer == write_buffer){ 250 251 // TODO: stop codec while playing silence when getting 'stream paused' 252 253 // start playing silence 254 audio_stream_paused = 1; 255 hal_audio_dma_play((const uint8_t *) silent_buffer, DMA_AUDIO_FRAMES*4); 256 printf("%6u - paused - bytes in buffer %u\n", (int) btstack_run_loop_get_time_ms(), btstack_ring_buffer_bytes_available(&ring_buffer)); 257 return; 258 } 259 playback_buffer = next_playback_buffer; 260 playback_data = start_of_buffer(playback_buffer); 261 hal_audio_dma_play(playback_data, audio_samples_len[playback_buffer]); 262 // btstack_run_loop_embedded_trigger(); 263 } 264 #endif 265 266 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 267 268 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 269 UNUSED(sample_rate); 270 UNUSED(context); 271 272 #ifdef STORE_SBC_TO_WAV_FILE 273 wav_writer_write_int16(num_samples*num_channels, data); 274 frame_count++; 275 #endif 276 277 #ifdef HAVE_PORTAUDIO 278 total_num_samples+=num_samples*num_channels; 279 280 // store pcm samples in ringbuffer 281 btstack_ring_buffer_write(&ring_buffer, (uint8_t *)data, num_samples*num_channels*2); 282 283 if (!audio_stream_started){ 284 audio_stream_paused = 1; 285 /* -- start stream -- */ 286 PaError err = Pa_StartStream(stream); 287 if (err != paNoError){ 288 printf("Error starting the stream: \"%s\"\n", Pa_GetErrorText(err)); 289 return; 290 } 291 audio_stream_started = 1; 292 } 293 #endif 294 295 } 296 #endif 297 298 299 #ifdef HAVE_AUDIO_DMA 300 301 static void handle_pcm_data(int16_t * data, int num_samples, int num_channels, int sample_rate, void * context){ 302 UNUSED(sample_rate); 303 UNUSED(context); 304 total_num_samples+=num_samples*num_channels; 305 306 // store in ring buffer 307 uint8_t * write_data = start_of_buffer(write_buffer); 308 uint16_t len = num_samples*num_channels*2; 309 memcpy(write_data, data, len); 310 audio_samples_len[write_buffer] = len; 311 312 // add/drop audio frame to fix drift 313 if (sbc_samples_fix > 0){ 314 memcpy(write_data + len, write_data + len - 4, 4); 315 audio_samples_len[write_buffer] += 4; 316 } 317 if (sbc_samples_fix < 0){ 318 audio_samples_len[write_buffer] -= 4; 319 } 320 321 write_buffer = next_buffer(write_buffer); 322 } 323 324 static void hal_audio_dma_process(btstack_data_source_t * ds, btstack_data_source_callback_type_t callback_type){ 325 UNUSED(ds); 326 UNUSED(callback_type); 327 328 if (!media_initialized) return; 329 330 int trigger_resume = 0; 331 if (audio_stream_paused) { 332 if (sbc_frame_size && btstack_ring_buffer_bytes_available(&ring_buffer) >= OPTIMAL_FRAMES_MIN * sbc_frame_size){ 333 trigger_resume = 1; 334 // reset buffers 335 playback_buffer = NUM_AUDIO_BUFFERS - 1; 336 write_buffer = 0; 337 } else { 338 return; 339 } 340 } 341 342 while (playback_buffer != write_buffer && btstack_ring_buffer_bytes_available(&ring_buffer) >= sbc_frame_size ){ 343 uint8_t frame[MAX_SBC_FRAME_SIZE]; 344 uint32_t bytes_read = 0; 345 btstack_ring_buffer_read(&ring_buffer, frame, sbc_frame_size, &bytes_read); 346 btstack_sbc_decoder_process_data(&state, 0, frame, sbc_frame_size); 347 } 348 349 if (trigger_resume){ 350 printf("%6u - resume\n", (int) btstack_run_loop_get_time_ms()); 351 audio_stream_paused = 0; 352 } 353 } 354 355 #endif 356 357 static int media_processing_init(avdtp_media_codec_configuration_sbc_t configuration){ 358 if (media_initialized) return 0; 359 360 #ifdef DECODE_SBC 361 btstack_sbc_decoder_init(&state, mode, handle_pcm_data, NULL); 362 #endif 363 364 #ifdef STORE_SBC_TO_WAV_FILE 365 wav_writer_open(wav_filename, configuration.num_channels, configuration.sampling_frequency); 366 #endif 367 368 #ifdef STORE_SBC_TO_SBC_FILE 369 sbc_file = fopen(sbc_filename, "wb"); 370 #endif 371 372 #ifdef HAVE_PORTAUDIO 373 // int frames_per_buffer = configuration.frames_per_buffer; 374 PaError err; 375 PaStreamParameters outputParameters; 376 const PaDeviceInfo *deviceInfo; 377 378 /* -- initialize PortAudio -- */ 379 err = Pa_Initialize(); 380 if (err != paNoError){ 381 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 382 return err; 383 } 384 /* -- setup input and output -- */ 385 outputParameters.device = Pa_GetDefaultOutputDevice(); /* default output device */ 386 outputParameters.channelCount = configuration.num_channels; 387 outputParameters.sampleFormat = PA_SAMPLE_TYPE; 388 outputParameters.suggestedLatency = Pa_GetDeviceInfo( outputParameters.device )->defaultHighOutputLatency; 389 outputParameters.hostApiSpecificStreamInfo = NULL; 390 deviceInfo = Pa_GetDeviceInfo( outputParameters.device ); 391 printf("PortAudio: Output device: %s\n", deviceInfo->name); 392 log_info("PortAudio: Output device: %s", deviceInfo->name); 393 /* -- setup stream -- */ 394 err = Pa_OpenStream( 395 &stream, 396 NULL, /* &inputParameters */ 397 &outputParameters, 398 configuration.sampling_frequency, 399 0, 400 paClipOff, /* we won't output out of range samples so don't bother clipping them */ 401 patestCallback, /* use callback */ 402 NULL ); 403 404 if (err != paNoError){ 405 printf("Error initializing portaudio: \"%s\"\n", Pa_GetErrorText(err)); 406 return err; 407 } 408 log_info("PortAudio: stream opened"); 409 printf("PortAudio: stream opened\n"); 410 #endif 411 #ifdef HAVE_AUDIO_DMA 412 audio_stream_paused = 1; 413 hal_audio_dma_init(configuration.sampling_frequency); 414 hal_audio_dma_set_audio_played(&hal_audio_dma_done); 415 // start playing silence 416 hal_audio_dma_done(); 417 #endif 418 419 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 420 memset(ring_buffer_storage, 0, sizeof(ring_buffer_storage)); 421 btstack_ring_buffer_init(&ring_buffer, ring_buffer_storage, sizeof(ring_buffer_storage)); 422 audio_stream_started = 0; 423 #endif 424 media_initialized = 1; 425 return 0; 426 } 427 428 static void media_processing_close(void){ 429 if (!media_initialized) return; 430 media_initialized = 0; 431 432 #ifdef STORE_SBC_TO_WAV_FILE 433 wav_writer_close(); 434 int total_frames_nr = state.good_frames_nr + state.bad_frames_nr + state.zero_frames_nr; 435 436 printf("WAV Writer: Decoding done. Processed totaly %d frames:\n - %d good\n - %d bad\n - %d zero frames\n", total_frames_nr, state.good_frames_nr, state.bad_frames_nr, state.zero_frames_nr); 437 printf("WAV Writer: Written %d frames to wav file: %s\n", frame_count, wav_filename); 438 #endif 439 440 #ifdef STORE_SBC_TO_SBC_FILE 441 fclose(sbc_file); 442 #endif 443 444 #if defined(HAVE_PORTAUDIO) || defined (HAVE_AUDIO_DMA) 445 audio_stream_started = 0; 446 #endif 447 448 #ifdef HAVE_PORTAUDIO 449 printf("PortAudio: Steram closed\n"); 450 log_info("PortAudio: Stream closed"); 451 452 PaError err = Pa_StopStream(stream); 453 if (err != paNoError){ 454 printf("Error stopping the stream: \"%s\"\n", Pa_GetErrorText(err)); 455 log_error("Error stopping the stream: \"%s\"", Pa_GetErrorText(err)); 456 return; 457 } 458 err = Pa_CloseStream(stream); 459 if (err != paNoError){ 460 printf("Error closing the stream: \"%s\"\n", Pa_GetErrorText(err)); 461 log_error("Error closing the stream: \"%s\"", Pa_GetErrorText(err)); 462 return; 463 } 464 err = Pa_Terminate(); 465 if (err != paNoError){ 466 printf("Error terminating portaudio: \"%s\"\n", Pa_GetErrorText(err)); 467 log_error("Error terminating portaudio: \"%s\"", Pa_GetErrorText(err)); 468 return; 469 } 470 #endif 471 472 #ifdef HAVE_AUDIO_DMA 473 hal_audio_dma_close(); 474 #endif 475 } 476 477 static void handle_l2cap_media_data_packet(uint8_t seid, uint8_t *packet, uint16_t size){ 478 UNUSED(seid); 479 int pos = 0; 480 481 avdtp_media_packet_header_t media_header; 482 media_header.version = packet[pos] & 0x03; 483 media_header.padding = get_bit16(packet[pos],2); 484 media_header.extension = get_bit16(packet[pos],3); 485 media_header.csrc_count = (packet[pos] >> 4) & 0x0F; 486 487 pos++; 488 489 media_header.marker = get_bit16(packet[pos],0); 490 media_header.payload_type = (packet[pos] >> 1) & 0x7F; 491 pos++; 492 493 media_header.sequence_number = big_endian_read_16(packet, pos); 494 pos+=2; 495 496 media_header.timestamp = big_endian_read_32(packet, pos); 497 pos+=4; 498 499 media_header.synchronization_source = big_endian_read_32(packet, pos); 500 pos+=4; 501 502 UNUSED(media_header); 503 504 // TODO: read csrc list 505 506 // printf_hexdump( packet, pos ); 507 // printf("MEDIA HEADER: %u timestamp, version %u, padding %u, extension %u, csrc_count %u\n", 508 // media_header.timestamp, media_header.version, media_header.padding, media_header.extension, media_header.csrc_count); 509 // printf("MEDIA HEADER: marker %02x, payload_type %02x, sequence_number %u, synchronization_source %u\n", 510 // media_header.marker, media_header.payload_type, media_header.sequence_number, media_header.synchronization_source); 511 512 avdtp_sbc_codec_header_t sbc_header; 513 sbc_header.fragmentation = get_bit16(packet[pos], 7); 514 sbc_header.starting_packet = get_bit16(packet[pos], 6); 515 sbc_header.last_packet = get_bit16(packet[pos], 5); 516 sbc_header.num_frames = packet[pos] & 0x0f; 517 pos++; 518 519 #ifdef HAVE_AUDIO_DMA 520 // store sbc frame size for buffer management 521 sbc_frame_size = (size-pos)/ sbc_header.num_frames; 522 #endif 523 524 UNUSED(sbc_header); 525 // printf("SBC HEADER: num_frames %u, fragmented %u, start %u, stop %u\n", sbc_header.num_frames, sbc_header.fragmentation, sbc_header.starting_packet, sbc_header.last_packet); 526 // printf_hexdump( packet+pos, size-pos ); 527 528 #if defined(HAVE_PORTAUDIO) || defined(STORE_SBC_TO_WAV_FILE) 529 btstack_sbc_decoder_process_data(&state, 0, packet+pos, size-pos); 530 #endif 531 532 #ifdef HAVE_AUDIO_DMA 533 btstack_ring_buffer_write(&ring_buffer, packet+pos, size-pos); 534 535 // decide on audio sync drift based on number of sbc frames in queue 536 int sbc_frames_in_buffer = btstack_ring_buffer_bytes_available(&ring_buffer) / sbc_frame_size; 537 if (sbc_frames_in_buffer < OPTIMAL_FRAMES_MIN){ 538 sbc_samples_fix = 1; // duplicate last sample 539 } else if (sbc_frames_in_buffer <= OPTIMAL_FRAMES_MAX){ 540 sbc_samples_fix = 0; // nothing to do 541 } else { 542 sbc_samples_fix = -1; // drop last sample 543 } 544 545 // dump 546 printf("%6u %03u %d\n", (int) btstack_run_loop_get_time_ms(), sbc_frames_in_buffer, sbc_samples_fix); 547 548 #endif 549 550 #ifdef STORE_SBC_TO_SBC_FILE 551 fwrite(packet+pos, size-pos, 1, sbc_file); 552 #endif 553 } 554 555 static void dump_sbc_configuration(avdtp_media_codec_configuration_sbc_t configuration){ 556 printf(" -- a2dp sink demo: Received media codec configuration:\n"); 557 printf(" - num_channels: %d\n", configuration.num_channels); 558 printf(" - sampling_frequency: %d\n", configuration.sampling_frequency); 559 printf(" - channel_mode: %d\n", configuration.channel_mode); 560 printf(" - block_length: %d\n", configuration.block_length); 561 printf(" - subbands: %d\n", configuration.subbands); 562 printf(" - allocation_method: %d\n", configuration.allocation_method); 563 printf(" - bitpool_value [%d, %d] \n", configuration.min_bitpool_value, configuration.max_bitpool_value); 564 printf("\n"); 565 } 566 567 static void avrcp_controller_packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 568 UNUSED(channel); 569 UNUSED(size); 570 uint16_t local_cid; 571 uint8_t status = 0xFF; 572 bd_addr_t adress; 573 574 if (packet_type != HCI_EVENT_PACKET) return; 575 if (hci_event_packet_get_type(packet) != HCI_EVENT_AVRCP_META) return; 576 switch (packet[2]){ 577 case AVRCP_SUBEVENT_CONNECTION_ESTABLISHED: { 578 local_cid = avrcp_subevent_connection_established_get_avrcp_cid(packet); 579 if (avrcp_cid != 0 && avrcp_cid != local_cid) { 580 printf("AVRCP Connection failed, expected 0x%02X l2cap cid, received 0x%02X\n", avrcp_cid, local_cid); 581 return; 582 } 583 584 status = avrcp_subevent_connection_established_get_status(packet); 585 if (status != ERROR_CODE_SUCCESS){ 586 printf("AVRCP Connection failed: status 0x%02x\n", status); 587 avrcp_cid = 0; 588 return; 589 } 590 591 avrcp_cid = local_cid; 592 avrcp_subevent_connection_established_get_bd_addr(packet, adress); 593 printf("Channel successfully opened: %s, avrcp_cid 0x%02x\n", bd_addr_to_str(adress), avrcp_cid); 594 595 // automatically enable notifications 596 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_PLAYBACK_STATUS_CHANGED); 597 avrcp_controller_enable_notification(avrcp_cid, AVRCP_NOTIFICATION_EVENT_NOW_PLAYING_CONTENT_CHANGED); 598 return; 599 } 600 case AVRCP_SUBEVENT_CONNECTION_RELEASED: 601 printf("Channel released: avrcp_cid 0x%02x\n", avrcp_subevent_connection_released_get_avrcp_cid(packet)); 602 avrcp_cid = 0; 603 return; 604 default: 605 break; 606 } 607 608 status = packet[5]; 609 if (!avrcp_cid) return; 610 611 // avoid printing INTERIM status 612 if (status == AVRCP_CTYPE_RESPONSE_INTERIM) return; 613 614 printf("AVRCP: command status: %s, ", avrcp_ctype2str(status)); 615 switch (packet[2]){ 616 case AVRCP_SUBEVENT_NOTIFICATION_PLAYBACK_STATUS_CHANGED: 617 printf("notification, playback status changed %s\n", avrcp_play_status2str(avrcp_subevent_notification_playback_status_changed_get_play_status(packet))); 618 return; 619 case AVRCP_SUBEVENT_NOTIFICATION_NOW_PLAYING_CONTENT_CHANGED: 620 printf("notification, playing content changed\n"); 621 return; 622 case AVRCP_SUBEVENT_NOTIFICATION_TRACK_CHANGED: 623 printf("notification track changed\n"); 624 return; 625 case AVRCP_SUBEVENT_NOTIFICATION_VOLUME_CHANGED: 626 printf("notification absolute volume changed %d\n", avrcp_subevent_notification_volume_changed_get_absolute_volume(packet)); 627 return; 628 case AVRCP_SUBEVENT_NOTIFICATION_AVAILABLE_PLAYERS_CHANGED: 629 printf("notification changed\n"); 630 return; 631 case AVRCP_SUBEVENT_SHUFFLE_AND_REPEAT_MODE:{ 632 uint8_t shuffle_mode = avrcp_subevent_shuffle_and_repeat_mode_get_shuffle_mode(packet); 633 uint8_t repeat_mode = avrcp_subevent_shuffle_and_repeat_mode_get_repeat_mode(packet); 634 printf("%s, %s\n", avrcp_shuffle2str(shuffle_mode), avrcp_repeat2str(repeat_mode)); 635 break; 636 } 637 case AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO: 638 printf("AVRCP_SUBEVENT_NOW_PLAYING_TITLE_INFO len %d \n", avrcp_subevent_now_playing_title_info_get_value_len(packet)); 639 if (avrcp_subevent_now_playing_title_info_get_value_len(packet) > 0){ 640 memcpy(value, avrcp_subevent_now_playing_title_info_get_value(packet), avrcp_subevent_now_playing_title_info_get_value_len(packet)); 641 printf(" Title: %s\n", value); 642 } 643 break; 644 645 case AVRCP_SUBEVENT_NOW_PLAYING_ARTIST_INFO: 646 if (avrcp_subevent_now_playing_artist_info_get_value_len(packet) > 0){ 647 memcpy(value, avrcp_subevent_now_playing_artist_info_get_value(packet), avrcp_subevent_now_playing_artist_info_get_value_len(packet)); 648 printf(" Title: %s\n", value); 649 } 650 break; 651 652 case AVRCP_SUBEVENT_NOW_PLAYING_ALBUM_INFO: 653 if (avrcp_subevent_now_playing_album_info_get_value_len(packet) > 0){ 654 memcpy(value, avrcp_subevent_now_playing_album_info_get_value(packet), avrcp_subevent_now_playing_album_info_get_value_len(packet)); 655 printf(" Title: %s\n", value); 656 } 657 break; 658 659 case AVRCP_SUBEVENT_NOW_PLAYING_GENRE_INFO: 660 if (avrcp_subevent_now_playing_genre_info_get_value_len(packet) > 0){ 661 memcpy(value, avrcp_subevent_now_playing_genre_info_get_value(packet), avrcp_subevent_now_playing_genre_info_get_value_len(packet)); 662 printf(" Title: %s\n", value); 663 } 664 break; 665 666 // case AVRCP_SUBEVENT_NOW_PLAYING_INFO:{ 667 // uint8_t value[100]; 668 // printf("now playing: \n"); 669 // if (avrcp_subevent_now_playing_info_get_title_len(packet) > 0){ 670 // memcpy(value, avrcp_subevent_now_playing_info_get_title(packet), avrcp_subevent_now_playing_info_get_title_len(packet)); 671 // printf(" Title: %s\n", value); 672 // } 673 // if (avrcp_subevent_now_playing_info_get_album_len(packet) > 0){ 674 // memcpy(value, avrcp_subevent_now_playing_info_get_album(packet), avrcp_subevent_now_playing_info_get_album_len(packet)); 675 // printf(" Album: %s\n", value); 676 // } 677 // if (avrcp_subevent_now_playing_info_get_artist_len(packet) > 0){ 678 // memcpy(value, avrcp_subevent_now_playing_info_get_artist(packet), avrcp_subevent_now_playing_info_get_artist_len(packet)); 679 // printf(" Artist: %s\n", value); 680 // } 681 // if (avrcp_subevent_now_playing_info_get_genre_len(packet) > 0){ 682 // memcpy(value, avrcp_subevent_now_playing_info_get_genre(packet), avrcp_subevent_now_playing_info_get_genre_len(packet)); 683 // printf(" Genre: %s\n", value); 684 // } 685 // printf(" Track: %d\n", avrcp_subevent_now_playing_info_get_track(packet)); 686 // printf(" Total nr. tracks: %d\n", avrcp_subevent_now_playing_info_get_total_tracks(packet)); 687 // printf(" Song length: %d ms\n", avrcp_subevent_now_playing_info_get_song_length(packet)); 688 // break; 689 // } 690 case AVRCP_SUBEVENT_PLAY_STATUS: 691 printf("song length: %d ms, song position: %d ms, play status: %s\n", 692 avrcp_subevent_play_status_get_song_length(packet), 693 avrcp_subevent_play_status_get_song_position(packet), 694 avrcp_play_status2str(avrcp_subevent_play_status_get_play_status(packet))); 695 break; 696 case AVRCP_SUBEVENT_OPERATION_COMPLETE: 697 printf("operation done %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 698 break; 699 case AVRCP_SUBEVENT_OPERATION_START: 700 printf("operation start %s\n", avrcp_operation2str(avrcp_subevent_operation_complete_get_operation_id(packet))); 701 break; 702 case AVRCP_SUBEVENT_PLAYER_APPLICATION_VALUE_RESPONSE: 703 // response to set shuffle and repeat mode 704 printf("\n"); 705 break; 706 default: 707 printf("Not implemented\n"); 708 break; 709 } 710 } 711 712 static void packet_handler(uint8_t packet_type, uint16_t channel, uint8_t *packet, uint16_t size){ 713 UNUSED(channel); 714 UNUSED(size); 715 uint16_t cid; 716 bd_addr_t address; 717 uint8_t status; 718 719 if (packet_type != HCI_EVENT_PACKET) return; 720 if (hci_event_packet_get_type(packet) != HCI_EVENT_A2DP_META) return; 721 722 switch (packet[2]){ 723 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_OTHER_CONFIGURATION: 724 printf(" -- a2dp sink demo: received non SBC codec. not implemented.\n"); 725 break; 726 case A2DP_SUBEVENT_SIGNALING_MEDIA_CODEC_SBC_CONFIGURATION:{ 727 printf(" -- a2dp sink demo: received SBC codec configuration.\n"); 728 sbc_configuration.reconfigure = a2dp_subevent_signaling_media_codec_sbc_configuration_get_reconfigure(packet); 729 sbc_configuration.num_channels = a2dp_subevent_signaling_media_codec_sbc_configuration_get_num_channels(packet); 730 sbc_configuration.sampling_frequency = a2dp_subevent_signaling_media_codec_sbc_configuration_get_sampling_frequency(packet); 731 sbc_configuration.channel_mode = a2dp_subevent_signaling_media_codec_sbc_configuration_get_channel_mode(packet); 732 sbc_configuration.block_length = a2dp_subevent_signaling_media_codec_sbc_configuration_get_block_length(packet); 733 sbc_configuration.subbands = a2dp_subevent_signaling_media_codec_sbc_configuration_get_subbands(packet); 734 sbc_configuration.allocation_method = a2dp_subevent_signaling_media_codec_sbc_configuration_get_allocation_method(packet); 735 sbc_configuration.min_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_min_bitpool_value(packet); 736 sbc_configuration.max_bitpool_value = a2dp_subevent_signaling_media_codec_sbc_configuration_get_max_bitpool_value(packet); 737 sbc_configuration.frames_per_buffer = sbc_configuration.subbands * sbc_configuration.block_length; 738 dump_sbc_configuration(sbc_configuration); 739 740 if (sbc_configuration.reconfigure){ 741 media_processing_close(); 742 } 743 // prepare media processing 744 media_processing_init(sbc_configuration); 745 break; 746 } 747 case A2DP_SUBEVENT_STREAM_ESTABLISHED: 748 a2dp_subevent_stream_established_get_bd_addr(packet, address); 749 status = a2dp_subevent_stream_established_get_status(packet); 750 cid = a2dp_subevent_stream_established_get_a2dp_cid(packet); 751 if (cid != a2dp_cid) break; 752 if (status){ 753 app_state = AVDTP_APPLICATION_IDLE; 754 printf(" -- a2dp sink demo: streaming connection failed, status 0x%02x\n", status); 755 break; 756 } 757 printf(" -- a2dp sink demo: streaming connection is established, address %s, a2dp cid 0x%02X, local_seid %d\n", bd_addr_to_str(address), a2dp_cid, local_seid); 758 local_seid = a2dp_subevent_stream_established_get_local_seid(packet); 759 app_state = AVDTP_APPLICATION_STREAMING; 760 break; 761 762 case A2DP_SUBEVENT_STREAM_STARTED: 763 cid = a2dp_subevent_stream_started_get_a2dp_cid(packet); 764 if (cid != a2dp_cid) break; 765 local_seid = a2dp_subevent_stream_started_get_local_seid(packet); 766 printf(" -- a2dp sink demo: stream started, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 767 // started 768 media_processing_init(sbc_configuration); 769 break; 770 771 case A2DP_SUBEVENT_STREAM_SUSPENDED: 772 cid = a2dp_subevent_stream_suspended_get_a2dp_cid(packet); 773 if (cid != a2dp_cid) break; 774 local_seid = a2dp_subevent_stream_suspended_get_local_seid(packet); 775 printf(" -- a2dp sink demo: stream paused, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 776 // paused/stopped 777 media_processing_close(); 778 break; 779 780 case A2DP_SUBEVENT_STREAM_RELEASED: 781 cid = a2dp_subevent_stream_released_get_a2dp_cid(packet); 782 if (cid != a2dp_cid) { 783 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 784 break; 785 } 786 local_seid = a2dp_subevent_stream_released_get_local_seid(packet); 787 app_state = AVDTP_APPLICATION_IDLE; 788 printf(" -- a2dp sink demo: stream released, a2dp cid 0x%02X, local_seid %d\n", a2dp_cid, local_seid); 789 790 // paused/stopped 791 media_processing_close(); 792 break; 793 case A2DP_SUBEVENT_SIGNALING_CONNECTION_RELEASED: 794 cid = a2dp_subevent_signaling_connection_released_get_a2dp_cid(packet); 795 if (cid != a2dp_cid) { 796 printf(" -- a2dp sink demo: unexpected cid 0x%02x instead of 0x%02x\n", cid, a2dp_cid); 797 break; 798 } 799 app_state = AVDTP_APPLICATION_IDLE; 800 printf(" -- a2dp sink demo: signaling connection released\n"); 801 break; 802 default: 803 printf(" -- a2dp sink demo: not parsed 0x%02x\n", packet[2]); 804 break; 805 } 806 } 807 808 #ifdef HAVE_BTSTACK_STDIN 809 static void show_usage(void){ 810 bd_addr_t iut_address; 811 gap_local_bd_addr(iut_address); 812 printf("\n--- Bluetooth AVDTP Sink/AVRCP Connection Test Console %s ---\n", bd_addr_to_str(iut_address)); 813 printf("b - AVDTP Sink create connection to addr %s\n", device_addr_string); 814 printf("B - AVDTP Sink disconnect\n"); 815 printf("c - AVRCP create connection to addr %s\n", device_addr_string); 816 printf("C - AVRCP disconnect\n"); 817 818 printf("\n--- Bluetooth AVRCP Commands %s ---\n", bd_addr_to_str(iut_address)); 819 printf("O - get play status\n"); 820 printf("j - get now playing info\n"); 821 printf("k - play\n"); 822 printf("K - stop\n"); 823 printf("L - pause\n"); 824 printf("u - start fast forward\n"); 825 printf("U - stop fast forward\n"); 826 printf("n - start rewind\n"); 827 printf("N - stop rewind\n"); 828 printf("i - forward\n"); 829 printf("I - backward\n"); 830 printf("t - volume up\n"); 831 printf("T - volume down\n"); 832 printf("p - absolute volume of 50 percent\n"); 833 printf("M - mute\n"); 834 printf("r - skip\n"); 835 printf("q - query repeat and shuffle mode\n"); 836 printf("v - repeat single track\n"); 837 printf("x - repeat all tracks\n"); 838 printf("X - disable repeat mode\n"); 839 printf("z - shuffle all tracks\n"); 840 printf("Z - disable shuffle mode\n"); 841 printf("---\n"); 842 } 843 #endif 844 845 static uint8_t media_sbc_codec_capabilities[] = { 846 0xFF,//(AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 847 0xFF,//(AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 848 2, 53 849 }; 850 851 static uint8_t media_sbc_codec_configuration[] = { 852 (AVDTP_SBC_44100 << 4) | AVDTP_SBC_STEREO, 853 (AVDTP_SBC_BLOCK_LENGTH_16 << 4) | (AVDTP_SBC_SUBBANDS_8 << 2) | AVDTP_SBC_ALLOCATION_METHOD_LOUDNESS, 854 2, 53 855 }; 856 857 #ifdef HAVE_BTSTACK_STDIN 858 static void stdin_process(char cmd){ 859 uint8_t status = ERROR_CODE_SUCCESS; 860 switch (cmd){ 861 case 'b': 862 printf(" - Create AVDTP connection to addr %s, and local seid %d.\n", bd_addr_to_str(device_addr), local_seid); 863 status = a2dp_sink_establish_stream(device_addr, local_seid, &a2dp_cid); 864 break; 865 case 'B': 866 printf(" - AVDTP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 867 status = avdtp_sink_disconnect(a2dp_cid); 868 break; 869 case 'c': 870 printf(" - Create AVRCP connection to addr %s.\n", bd_addr_to_str(device_addr)); 871 status = avrcp_controller_connect(device_addr, &avrcp_cid); 872 break; 873 case 'C': 874 printf(" - AVRCP disconnect from addr %s.\n", bd_addr_to_str(device_addr)); 875 status = avrcp_controller_disconnect(avrcp_cid); 876 break; 877 878 case '\n': 879 case '\r': 880 break; 881 case 'O': 882 printf(" - get play status\n"); 883 status = avrcp_controller_get_play_status(avrcp_cid); 884 break; 885 case 'j': 886 printf(" - get now playing info\n"); 887 status = avrcp_controller_get_now_playing_info(avrcp_cid); 888 break; 889 case 'k': 890 printf(" - play\n"); 891 status = avrcp_controller_play(avrcp_cid); 892 break; 893 case 'K': 894 printf(" - stop\n"); 895 status = avrcp_controller_stop(avrcp_cid); 896 break; 897 case 'L': 898 printf(" - pause\n"); 899 status = avrcp_controller_pause(avrcp_cid); 900 break; 901 case 'u': 902 printf(" - start fast forward\n"); 903 status = avrcp_controller_start_fast_forward(avrcp_cid); 904 break; 905 case 'U': 906 printf(" - stop fast forward\n"); 907 status = avrcp_controller_stop_fast_forward(avrcp_cid); 908 break; 909 case 'n': 910 printf(" - start rewind\n"); 911 status = avrcp_controller_start_rewind(avrcp_cid); 912 break; 913 case 'N': 914 printf(" - stop rewind\n"); 915 status = avrcp_controller_stop_rewind(avrcp_cid); 916 break; 917 case 'i': 918 printf(" - forward\n"); 919 status = avrcp_controller_forward(avrcp_cid); 920 break; 921 case 'I': 922 printf(" - backward\n"); 923 status = avrcp_controller_backward(avrcp_cid); 924 break; 925 case 't': 926 printf(" - volume up\n"); 927 status = avrcp_controller_volume_up(avrcp_cid); 928 break; 929 case 'T': 930 printf(" - volume down\n"); 931 status = avrcp_controller_volume_down(avrcp_cid); 932 break; 933 case 'p': 934 printf(" - absolute volume of 50 percent\n"); 935 status = avrcp_controller_set_absolute_volume(avrcp_cid, 50); 936 break; 937 case 'M': 938 printf(" - mute\n"); 939 status = avrcp_controller_mute(avrcp_cid); 940 break; 941 case 'r': 942 printf(" - skip\n"); 943 status = avrcp_controller_skip(avrcp_cid); 944 break; 945 case 'q': 946 printf(" - query repeat and shuffle mode\n"); 947 status = avrcp_controller_query_shuffle_and_repeat_modes(avrcp_cid); 948 break; 949 case 'v': 950 printf(" - repeat single track\n"); 951 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_SINGLE_TRACK); 952 break; 953 case 'x': 954 printf(" - repeat all tracks\n"); 955 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_ALL_TRACKS); 956 break; 957 case 'X': 958 printf(" - disable repeat mode\n"); 959 status = avrcp_controller_set_repeat_mode(avrcp_cid, AVRCP_REPEAT_MODE_OFF); 960 break; 961 case 'z': 962 printf(" - shuffle all tracks\n"); 963 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_ALL_TRACKS); 964 break; 965 case 'Z': 966 printf(" - disable shuffle mode\n"); 967 status = avrcp_controller_set_shuffle_mode(avrcp_cid, AVRCP_SHUFFLE_MODE_OFF); 968 break; 969 default: 970 show_usage(); 971 return; 972 } 973 if (status != ERROR_CODE_SUCCESS){ 974 printf("Could not perform command, status 0x%2x\n", status); 975 } 976 } 977 #endif 978 979 980 int btstack_main(int argc, const char * argv[]); 981 int btstack_main(int argc, const char * argv[]){ 982 983 UNUSED(argc); 984 (void)argv; 985 986 /* Register for HCI events */ 987 hci_event_callback_registration.callback = &packet_handler; 988 hci_add_event_handler(&hci_event_callback_registration); 989 990 l2cap_init(); 991 // Initialize AVDTP Sink 992 a2dp_sink_init(); 993 a2dp_sink_register_packet_handler(&packet_handler); 994 a2dp_sink_register_media_handler(&handle_l2cap_media_data_packet); 995 996 uint8_t status = a2dp_sink_create_stream_endpoint(AVDTP_AUDIO, AVDTP_CODEC_SBC, media_sbc_codec_capabilities, sizeof(media_sbc_codec_capabilities), media_sbc_codec_configuration, sizeof(media_sbc_codec_configuration), &local_seid); 997 if (status != ERROR_CODE_SUCCESS){ 998 printf("A2DP Sink: not enough memory to create local stream endpoint\n"); 999 return 1; 1000 } 1001 // Initialize AVRCP COntroller 1002 avrcp_controller_init(); 1003 avrcp_controller_register_packet_handler(&avrcp_controller_packet_handler); 1004 1005 // Initialize SDP 1006 sdp_init(); 1007 // setup AVDTP sink 1008 memset(sdp_avdtp_sink_service_buffer, 0, sizeof(sdp_avdtp_sink_service_buffer)); 1009 a2dp_sink_create_sdp_record(sdp_avdtp_sink_service_buffer, 0x10001, 1, NULL, NULL); 1010 sdp_register_service(sdp_avdtp_sink_service_buffer); 1011 1012 // setup AVRCP 1013 memset(sdp_avrcp_controller_service_buffer, 0, sizeof(sdp_avrcp_controller_service_buffer)); 1014 avrcp_controller_create_sdp_record(sdp_avrcp_controller_service_buffer, 0x10001, AVRCP_BROWSING_ENABLED, 1, NULL, NULL); 1015 sdp_register_service(sdp_avrcp_controller_service_buffer); 1016 1017 gap_set_local_name("A2DP Sink Demo 00:00:00:00:00:00"); 1018 gap_discoverable_control(1); 1019 gap_set_class_of_device(0x200408); 1020 printf("Starting BTstack ...\n"); 1021 // turn on! 1022 hci_power_control(HCI_POWER_ON); 1023 1024 #ifdef HAVE_AUDIO_DMA 1025 static btstack_data_source_t hal_audio_dma_data_source; 1026 // set up polling data_source 1027 btstack_run_loop_set_data_source_handler(&hal_audio_dma_data_source, &hal_audio_dma_process); 1028 btstack_run_loop_enable_data_source_callbacks(&hal_audio_dma_data_source, DATA_SOURCE_CALLBACK_POLL); 1029 btstack_run_loop_add_data_source(&hal_audio_dma_data_source); 1030 #endif 1031 1032 #ifdef HAVE_BTSTACK_STDIN 1033 // parse human readable Bluetooth address 1034 sscanf_bd_addr(device_addr_string, device_addr); 1035 btstack_stdin_setup(stdin_process); 1036 #endif 1037 1038 return 0; 1039 } 1040